#include<sys/types.h>
#include<sys/stat.h>
#include<fcntl.h>
#include<stdlib.h>
#include<stdio.h>
int main(void)
{
    char c;
    while(Read(STDIN_FILENO,&c,1) != 0)
        Write(STDOUT_FILENO,&c,1);
    exit(0);
}　
